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Optimized Parameters for Synthesis of BaTiO3 Films With High Electromechanical Coupling

[+] Author Affiliations
Zhi Zhou, Christopher C. Bowland, Brendan A. Patterson

University of Florida, Gainesville, FL

Mohammad H. Malakooti, Henry A. Sodano

University of Michigan, Ann Arbor, MI

Paper No. SMASIS2016-9126, pp. V001T01A008; 5 pages
doi:10.1115/SMASIS2016-9126
From:
  • ASME 2016 Conference on Smart Materials, Adaptive Structures and Intelligent Systems
  • Volume 1: Multifunctional Materials; Mechanics and Behavior of Active Materials; Integrated System Design and Implementation; Structural Health Monitoring
  • Stowe, Vermont, USA, September 28–30, 2016
  • Conference Sponsors: Aerospace Division
  • ISBN: 978-0-7918-5048-0
  • Copyright © 2016 by ASME

abstract

This research improves upon prior research efforts on the hydrothermal synthesis of barium titanate (BaTiO3) films. It has been established that BaTiO3 can be synthesized using a two-step hydrothermal reaction that first synthesizes TiO2 then converts it to BaTiO3. Past research, however, resulted in relatively low ferroelectric properties using this technique. The research addresses that shortcoming by offering an optimized hydrothermal synthesis process that significantly increase the electromechanical coupling of the BaTiO3 film. Here, it is shown that the d33 achieves a value of 80 pm/V, which is the bulk BaTiO3 value. Additionally, this optimization results in an enhanced dielectric constant of 1600. Therefore, this research reveals that the ferroelectric properties of a hydrothermally synthesized BaTiO3 film can be significantly enhanced through slight modifications in the hydrothermal processing procedure.

Copyright © 2016 by ASME
Topics: Optimization

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